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Effects of laser prepulse on proton generation

Batani, D.; Jafer, R.; Redaelli, R.; Dezulian, R.; Lundh, Olle LU ; Lindau, Filip LU ; Persson, Anders LU ; Osvay, Karoly LU ; Wahlström, Claes-Göran LU and Carroll, D. C., et al. (2010) COULOMB Workshop on Ions Acceleration with High Power Lasers In Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 620(1). p.76-82
Abstract
Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration) Several effects are associated to the prepulse and are discussed in this contribution: i) Destruction of thin foil targets by the shock generated by the laser prepulse ii) Creation of preplasma on target front side affecting laser absorption iii) Deformation of target rear side iv) Whole displacement of thin foil targets affecting focusing condition In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed... (More)
Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration) Several effects are associated to the prepulse and are discussed in this contribution: i) Destruction of thin foil targets by the shock generated by the laser prepulse ii) Creation of preplasma on target front side affecting laser absorption iii) Deformation of target rear side iv) Whole displacement of thin foil targets affecting focusing condition In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy. The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved. (Less)
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Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
High-pressure, Prepulse, Laser absorption, Proton generation, Shock, phase diagram
in
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
volume
620
issue
1
pages
76 - 82
publisher
Elsevier
conference name
COULOMB Workshop on Ions Acceleration with High Power Lasers
external identifiers
  • wos:000280078000015
  • scopus:77953614174
ISSN
0168-9002
DOI
10.1016/j.nima.2010.01.064
language
English
LU publication?
yes
id
78b12fec-ce53-4b02-adc1-dee4110fb986 (old id 1654855)
date added to LUP
2010-08-30 10:14:25
date last changed
2018-05-29 09:40:47
@inproceedings{78b12fec-ce53-4b02-adc1-dee4110fb986,
  abstract     = {Low-intensity laser prepulse ( &lt; 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration) Several effects are associated to the prepulse and are discussed in this contribution: i) Destruction of thin foil targets by the shock generated by the laser prepulse ii) Creation of preplasma on target front side affecting laser absorption iii) Deformation of target rear side iv) Whole displacement of thin foil targets affecting focusing condition In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy. The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Batani, D. and Jafer, R. and Redaelli, R. and Dezulian, R. and Lundh, Olle and Lindau, Filip and Persson, Anders and Osvay, Karoly and Wahlström, Claes-Göran and Carroll, D. C. and McKenna, P. and Flacco, A. and Malka, V. and Veltcheva, M.},
  booktitle    = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
  issn         = {0168-9002},
  keyword      = {High-pressure,Prepulse,Laser absorption,Proton generation,Shock,phase diagram},
  language     = {eng},
  number       = {1},
  pages        = {76--82},
  publisher    = {Elsevier},
  title        = {Effects of laser prepulse on proton generation},
  url          = {http://dx.doi.org/10.1016/j.nima.2010.01.064},
  volume       = {620},
  year         = {2010},
}